Rolling apparatus.



PAT-ENTBD 0.0111/7;A 1905. 0.0. LAMBERT 0H. A. CARDozo.- f

Y No. 002,048.

UNrrnn srATns PATENT vonirica.

PARIS, FRANCE.

`RoLLlNe APPARATUS.

Specification of Letters Patent.

Patented Oct. 17, 1905.

Application filed January 4, 1905. Serial No. 239.679.

To rtl/f 11i/mnt it'ntay concern:

Be it` known that we. GUs'rAvn AN'roINn LAMBERT, civil engineer, residing at No. 44 Rue du Ranelagh, and HENRI ALEXANDRE CARDozo. civil engineer, residing at No. 62 Rue de Tocqueville, Paris, in the Republic of France, citizens of the RepublicV of France, have invented certain new and useful Improvements in Rolling Apparatus, of which the following is a specification.

It is recognized that in rolling metal bars and the like by means of a system of planetary rolls-that is, by means of sets of rolls revolving around one axis-there arealways formed on the rolled surface undulations more or less pronounced, which necessitates time in contact with the wor-k.

The present invention has `for its object to overcome this objection by means of an` arrangement which enables the rolls after striking the Work to continue to exercise a rolling action thereon while moving for a short distance along a straight path. To this end the path of the revolving axes of the rolls is determined by a guide engaged by guide-rollers carried by said rolls and having a definite contour which causes the rolls when brought in contact with the work to remain in contact therewith, and so exercise a rolling or drawing action and remove the undulations as produced. i

In the accompanying drawings` which illustrate the invention, Figure l is a vertical section of the improved apparatus on the line A A of Fig. 2. Fig. 2 is a horizontal section on the line B B of Fig. l. Fig. 3 is a section on the line C C of Fig. 2, and Fig. 4 is a secw tion through one of the disks carrying the journals of the rolls.

The rolling-mill comprises two sets of rotatable rolls c of the number two, four, or the like in each set. In the drawingsannexed four rolls are shown in eaclvY set. These rolls are mechanically revolved .it a very high speed around two shafts b, disposed and driven as in the usual analogous systems. Y' The journals c of said rolls are loosely mounted in bushes r] capable of free radial movement on plates or disks e. These disks, of the number of four, are disposed in pairs on both sides of said rolls a and are'fast on the rotating shafts I). They are provided with radial notches or slots in which are free to move the bushes d, the said notches being shown symmetrically disposed inuespeet of the two pairs of disks. The spindles of the'rolls terminate at each extremity in guide-rollerisf, which, however, might be next the central rolls'or in one piece therewith.

The rollers f are directed by guides g, formed in thebrackets, serving to supportthe bearings of the shafts L. Each of the guides g* includes a straight part /t 7T, Fig. 3, connected by a suitable curve 2' j with the rest of the path, which is perfectly circular, the said straight parts being'at the position where the rolls of both sets come into contact with the work.

It will be readily understood that if the shafts turn in the direction indicated by the arrows and at a very high speed the rolls a when they come in contact with the work will continue to remain in eontacttherewith and will movein a straight path corresponding to the part it 't' of the guide by reason of the centrifugal force which tends to apply the rollers f against the guides g and by virtue also of the arrangement of the disks e, which enables the journals of the rollsto move radially. In this way the rollt` when they arrive at the point /1/ continue their rolling action in a straight line instead of rising according to the tangential circumference at /t, as was the case in ordinary systems. The surface is thus rolled ilat, and the undulations unavoidably produced in all systems of planetary rolling` apparatus are flattened out.

rl`he speed of rotation of the shafts should be such that whatever be the weight of the rolls, which weight varies according to the work being passed through, the centrifugal force developed should always exceed the force necessary to bring the rollers against the guide, the' excess ,of this force being determined by the metal being treated.

Having now described our invention, what we claim as new, and desire to secure by Letters Patent, is--- l. A rolling apparatus comprising two cooperating sets of planetary rolls it between which the work is led, in combination with two rotatable shafts b about which respec- IOC i tively each set ofrolls is adapted to revolve,

disks @mounted fast oriv each shaft and upon AWhich arel loosely mounted the journals c of the said rolls,"andlstationary guides g comprising a curved part and a short straight part upon which the journals ofT the rolls a are adapted to move, substantially as and for the purpose set forth.

2. A rolling apparatus comprising,r two eo- .operating sets of planetary'rolls a betweenA which the Work is led,in combination with tWo rotatablegshafts b. about which respec-l tively each set of rollers is adapted to revolve, disks e provided with radial slots and mounted fast on each shaft, bushes 0l slidably mounted, on said radial slots and inwhiehfare loosely mounted the journals c of the rolls a, guidev rollers f connected to the rolls a, and stationary guides 'gv uponl which are adapted to move said guidefrollers comprising a curved part and a short straight part leading from the ypoint Where the rolls come in Contact with the Work, substantially as and for the pur' pose set forth.

In testimony whereof We have signed our names vto this specication'in the presence of 

